feat: optimize five Sealos templates

[yangchuansheng]

Summary

• Optimize chatgpt-next-web, s-pdf, odysseus, lobe-chat-db, and code-server templates for Sealos deployment conventions.
• Tune minimum runtime resources from live deployments and add service, ingress, app links, and conditional service wiring where needed.
• Refresh English and Chinese READMEs with deployment, login, and post-deploy guidance.
• Add refreshed screenshots for odysseus and lobe-chat-db.

Validation

• Ran docker-to-sealos consistency checks: 40 rules passed.
• Ran docker-to-sealos quality gate: passed.
• Ran git diff --check: passed.
• Live smoke-tested chatgpt-next-web access code flow, s-pdf PostgreSQL deployment, odysseus admin login and Brain page, lobe-chat-db Logto registration and Knowledge/Discover pages, and code-server password login plus workbench navigation.
• Verified final cleanup scan for target deployments, Instance resources, services, ingresses, PVCs, KubeBlocks clusters, object storage buckets, jobs, config maps, and secrets returned empty.
• Verified screenshots are 3840x2160 and below 200 KB.

Notes

• Stirling-PDF uses PostgreSQL when the conditional database option is selected.
• LobeChat Logto issuer guidance uses the /oidc issuer endpoint.
• Chinese deployment links keep the sealos.io domain.